Extension joint



Feb. 15, I949. LOMELINO 2,461,828

I EXTENSION JOINT Filed May 15, 1946 GEO/P65 fiFEEM/i/V Lama/Na PatentedF eb. 15 1949 EXTENSION JOINT George Freeman Lomel ino, Olney, Ill.,assignor of one-half to Lawrence E. Ostrom, Olney, Ill.

Application May 13, 1946, Serial No. 669,223

This invention relates to an extension joint, and has for one of itsobjects the production of a simple and efiicient means for providingastiif connection between two lines, such as pipe lines, and the like.

A further object of this invention is the production of a simple andefiicient means for providing a stiff connection between two lines suchas pipe lines, and the like, wherein the extension joint is slidably ortelescopically adjustable to form a junction between two pipelineswithout forcing the pipe lines out of alignment.

Further objects and advantages of this invention will appear throughoutthe following specification and claim.

In the drawing:

Figure 1 is a longitudinal sectional view through the extension joint,certain parts being shown in side elevation;

Figure 2 is a transverse sectional view taken on line 22 of Figure 1; 1

Figure 3 is a transverse sectional view taken on line 3-3 of Figure 1.

By referring to the drawing, it will be noted that designates onesection of pipe to be connected to the expansion joint A, and IIdesignates the other section of pipe to be connected to the expansionjoint A.

The expansion joint A comprises a primary section I3 in which issli-dably fitted the auxiliary section I l. The primary section I3carries a coupling I5 at one end, preferably of the type shown in myapplication relating to a Coupling, filed,

ly locks the sections in a proper adjusted relation to provide a stiffconnection between the sections of the joint.

The auxiliary section I4 carries a coupling I1 at its opposite end whichslidably engages the pipe Ill for firmly and efiiciently sealing theconnection between the-auxiliary section I4 and the pipe IIl therebycompleting the stiff tween the pipes I0 and II.

From the foregoing description it will be seen that a simple andefficient means isprovided to produce a stiff connection between thelines of connection be- 1 Claim. (Cl. 285-2) 2 pipe and the like,whether these pipes are in alignment or the aligned pipes are carried bytwo parallel lines. It should be noted that no threads are necessary onthe pipes Ill and II- where they engage the couplings I1 and I5, sincethe connection is slidable and the couplings are clamped firmly inposition when the proper relative adjustment has been made to provide aproper length for the extension joint A to connect the pipes I0 and II.

As set forth in my application Serial Number 664,511, it will be notedthat each coupling I5,

I6 and I1 comprises a gripping thimble I8 which fits over the elementsto be adjusted, each thimble l8 comprising a circular body having asplit tapered end, the inner face of which is provided with suitablegripping teeth I9. These teeth I9 bite into the elements to be adjusted,such as the auxiliary section I4 of the extension joint A, and the pipesI0 and II as shown in Figure 1. A compressible packing ring 26 iscarried by each coupling, and this packing ring 20 is adapted to becompressed by the abutting thimble I 8, as .the clamping sleeve 2| ofeach couplingis threaded upon its support, such as the threaded oppositeends 22 and 23 of the primary section I3 at the threaded end 24 of theauxiliary section I4. These teeth I9 only grip the pip-es I0 and I I andthe adjustable portion of the section I4 after the ring 20 has beencompressed to properly seal the coupling after which time the teeth I9bite into their supports to lock the pipes iii and II and the section I4in a fixed adjusted position.

Having described the invention, what is claimed I threaded end of theprimary section, and a grip- (References on following page) REFERENCESCITED The following references are of record in the Number file of thispatent: 17,848 UNITED STATES PATENTS 380,035 406,685 Number Name Date130,216 Gooda1e Aug. 6, 187.2 433,489 Patts Aug. 5, 1890 827,951Anderson Aug. 7, 1906 10 1,030,237 Hall June 18, 191-2 FOREIGN PATENTSCountry Date Great Britain 1395 Great Britain 1932 Great Britain 1933

